trait FileSaver {
    /**
     * @param $file
     * @return string
     */
    public function setFileAttribute($file)
    {
        if ($file instanceOf UploadedFile) {

            $fileNameWithExt = $file->getClientOriginalName();
            $filename = pathinfo($fileNameWithExt, PATHINFO_FILENAME);
            $extension = $file->getClientOriginalExtension();
            $fileNameToStore = $filename . '_' . time() . '.' . $extension;

            $file->storeAs($this->file_path, $fileNameToStore);

            return $this->attributes['file'] = $fileNameToStore;
        }
    }
}